[BUG] inconsistent labeling of keyboard shortcut ctrl+o

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

the ctrl+o command is shown in two different ways depending on context, lowercase in the main process thread and uppercased in the expanded / detailed transcript view. standardizing on lowercase here makes the most sense as it almost looks like ctrl+0 (zero) when uppercased

<img width="389" height="24" alt="Image" src="https://github.com/user-attachments/assets/df81e862-df4d-4d41-9e8b-012f6482b8d2" />

<img width="488" height="51" alt="Image" src="https://github.com/user-attachments/assets/620be906-5570-45b1-ab53-25c13655d325" />

What Should Happen?

all keyboard shortcut hints should be consistently shown in lowercase format

Error Messages/Logs

Steps to Reproduce

1. prompt claude to do anything
2. press ctrl+o to show Detailed Transcript view

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.0.31 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

iTerm2

Additional Information

_No response_